Finding the Third Proportional to 57,012.19 and 89,434.13

Step by Step Solution

1. Step 1: Write the proportion equation
   57,012.19 : 89,434.13 = 89,434.13 : x
2. Step 2: Convert to fraction form
   57,012.19/89,434.13 = 89,434.13/x
3. Step 3: Cross multiply
   57,012.19x = 89,434.13 × 89,434.13
4. Step 4: Simplify right side
   57,012.19x = 7,998,462,714.52
5. Step 5: Solve for x
   x = 7,998,462,714.52/57,012.19
6. Step 6: Final answer
   x = 140,293.91